meta-horizonn-fca-huh/src/logout.js

Facebook-Chat-API Protect and Deploy by Kanzu and HZI Team. Kem is redeveloped. Rename package is Meta Horizonn and package supported ChatBot Messenger. and make it lightweight package by jonell huh

"use strict";

var utils = require("../utils");
var log = require("npmlog");

module.exports = function (defaultFuncs, api, ctx) {
  return function logout(callback) {
    var resolveFunc = function () {};
    var rejectFunc = function () {};
    var returnPromise = new Promise(function (resolve, reject) {
      resolveFunc = resolve;
      rejectFunc = reject;
    });

    if (!callback) {
      callback = function (err, friendList) {
        if (err) return rejectFunc(err);

        resolveFunc(friendList);
      };
    }

    var form = {
      pmid: "0"
    };

    defaultFuncs
      .post("https://www.facebook.com/bluebar/modern_settings_menu/?help_type=364455653583099&show_contextual_help=1", ctx.jar, form)
      .then(utils.parseAndCheckLogin(ctx, defaultFuncs))
      .then(function (resData) {
        var elem = resData.jsmods.instances[0][2][0].filter(function (v) {
          return v.value === "logout";
        })[0];

        var html = resData.jsmods.markup.filter(function (v) {
          return v[0] === elem.markup.__m;
        })[0][1].__html;

        var form = {
          fb_dtsg: utils.getFrom(html, '"fb_dtsg" value="', '"'),
          ref: utils.getFrom(html, '"ref" value="', '"'),
          h: utils.getFrom(html, '"h" value="', '"')
        };

        return defaultFuncs
          .post("https://www.facebook.com/logout.php", ctx.jar, form)
          .then(utils.saveCookies(ctx.jar));
      })
      .then(function (res) {
        if (!res.headers) throw { error: "An error occurred when logging out." };

        return defaultFuncs
          .get(res.headers.location, ctx.jar)
          .then(utils.saveCookies(ctx.jar));
      })
      .then(function () {
        ctx.loggedIn = false;
        log.info("logout", "Logged out successfully.");
        callback();
      })
      .catch(function (err) {
        log.error("logout", err);
        return callback(err);
      });
    return returnPromise;
  };
};